FYI Zhu, Robert, and others getting screwed by guests destroying your property, you may want to consider adding under "House Rules" that "guests agree and are responsible for providing host a security deposit upon check in for x number of dollars and it will be returned upon satisfactory inspection at check out.
Something to consider....
It's a shame really because there are other options that Airbnb and some hosts don't consider- like Trivago, Travelocity, Home Away, Corporatehousingbyowner, etc. In time there may be more copanies that outwit and rival Airbnb drawing away disgruntled hosts- super and otherwise.
While Airbnb has started something years ago that turns a profit it looks like they may have become foolishly short-sided.
When I heard the Airbnb executive giving the recent Facebook presentation I recalled him citing " We have x number of homes with x number of beds and x number of bathrooms, I cringed. Airbnb is a "software schedulig" and "payment processing" company who makes money off the backs of hosts who carry the product- housing. Most of the times it's in hosts homes! Without us they have nothing for guests to pay them services fees on.
A bit more humility, and overall relationship building with hosts, (host apprecition programs or events), would go a long way for Airbnb.
When they wake up from their wonderful dream they will see their company profits may have plummeted because they've gotten too sloppy, too deaf, too greedy, too careless, etc. Now watch and mark my words.
Meantwhile, we'll continue on this dwindlig gravy train but already we are seeking exits as we observe Airbnb taking some new routes that may lead to their demise.
Karen